Improvement in lathes for turning wagon-hubs



UNITED STATES PATENT OFFICE.

HIBAM lNMAN, OF HAGAMANS MILLS, NEW YORK.

IMPROVEMENT IN LATHES FOR TURNING WAGON-HUBS.

Specification forming part of Letters Patent No. 57,145, dated August14, 1866.

To all 'whom it 'may concern:

Be it known that HIRAM INMAN, of Hagamans Mills, in the county ofMontgomery and State of New York, have invented a new and ImprovedMachine for Turning Hubs; and I do hereby declare that the following isa full, clear, and exact description thereof, which will enable thoseskilled in the art to make and use the same, reference being had to theaccompanying drawings, forming part of this specitication, in which-Figure l is a side sectional view of my invention, taken in the line .rm, Fig. 2; Fig. 2, a plan or top view of the same.

Similar letters of reference indicate corresponding parts.

This invention relates to a new and improved machine for turning hubs,whereby the work may be rapidly and perfectly performed, effecting agreat saving both in time and labor.

A represents a horizontal frame, on which two fixed heads, B B', aresecured, having horizontal arbors C C' fitted in them.

The arbor G of the head B has a cone of pulleys D upon it and a toothedwheel, E, the latter having a pinion, F, gearing into it, which pinionis on a shaft, G, one bearing of which isin apost, H, on the frame A,and the other in a lever, I. 0n the shaft G there is also placed apulley, J.

The arbor C' of the head B' is simply a sliding` one, and it is securedin position by a clamp, K.

L is a carriage, which is fitted ou the frame A between the two heads BB', and is moved back and forth in a direction at right angles with thearbors C C' by means of a rack, a, on the carriage and a pinion, b, onthe lower end of a vertical shaft, M, the upper end of the latter beingprovided with a crank, c, for the convenience of turning it. Thiscarriage has an upright frame, N, on one end of it, and to the top ofhorizontal bar d of said frame there are attached two cutters, e e, insuch a manner that they may be adjusted laterally. On the opposite endof the carriage L there are two uprights, ff, between which a rotaryshaft, O, is fitted, said shaft having two cutters, P P, attached to it.

The portion of the device above described is for roughing oif theblocks, cutting them in cylindrical form and of the proper length. Theblocks Q are centered, one at a time, between the arbors C U', the blockbeing rotated by the arbor C, motion to which is given from the shaft G,through the medium ofthe gearing E F; or the motion may be givendirectly to said shaft by a belt passing around one of the pulleys D. Atfirst, when the block is being roughed off, the arbor C is rotated fromshaft G, as a slow motion is required, the shaft O being rotated with auniform speed or with the same speed at all times. .After the block isroughed oif the pinion F is thrown out of gear with wheel E, and thequick movement given the block untilit is turned or out in cylindricalform and of the proper diameter, the carriage L being moved in thedirection indicated by arrow l, in order-to feed the cutters P to theirwork. After the block is thus cut or turned the carriage L is moved inareverse direction, as indicated by arrow 2, and the cutters e e cut theends of the block, so as to make it of the proper or desired length.

The cutter-shaft 0, shaft G, and arbor (l are all rotated from acounter-shaft over the machine.

R R' are two fixed heads on the frame A, in which arbors S S' arefitted, the arbor S in the head R being a rotating one. The turned blockis fitted between the arbors S S', and is rotated from the arbor S.

T is a carriage tted on ways or guides g g on the frame A, between theheads lt R', and moved back and forth by a screw-rod, U, working in anut, h, and the ways or guides g g are connected at their ends to form aframe, and this frame is adjusted laterally by a screwrod, V, working ina nut, t'.

On the top of the carriage T there is attached a cutter, W, of the formcorresponding to that designed to be given the hub, and the two curvedbars or stops jj are attached to the carriage to limit the depth of thecut of cutter W. The cutter W is adjusted laterally to the desiredposition by turning the screwv rod V, and motion being given the blockthe cutter W is moved toward its work by turning the screw-rod and thehub is turned. The cutter W may have its cutting-edge adjusted in aproper relative position with the hub or block by raising or loweringthe inner end of With the fixed heads B B' and arbors C C', the frame ofthe guides q g by means of a setbetween which the block Q is centered,subscreW, 7c. (See Figs. 2 and 4.) stautially as and for the purpose setforth` By this machine hubs may be turned rap- 2. The carriage T, withcutter W and stops idly and of a uniform size and pattern. j j attached,in connection With the arbors S S Having thus described my invention,what in the xed heads R R', substantially as and I claim as new, anddesire to secure by Letfor the purpose specified. ters Patent, is-

1. The rot-ary cutters P P and fixed cutters e e, attached to acarriage, L, ou the frame A of the machine, and arranged, in connectionHIRAM INMAN. Witnesses:

AHAsUERUs MARsILUs, FRANCIS M. HAGAMAN.

A Tv

